Defender calls for calm following defeat to Swindon Town at Roots Hall.
Played in sweltering conditions at Roots Hall, Fabien Robert's second half strike proved the difference as the Robins returned to Wiltshire with the three points.
“We're all really disappointed,” Prosser reflected after the game.
“We had the chances and they went up the other end, scored and won 1-0. The ball's just not dropping for us.
“The biggest difference this year in this league is the finishing. Two lefties is very rare and I think it's only the third or fourth time I've played on the right hand side of the two. We had good chances, and a positive is that we are creating opportunities.
“We can't let our heads drop and we have to keep going. It's a massive game next week and will be looking to get those three points.”
Prosser came in for the injured Cian Bolger against Swindon and hopes he's impressed enough to continue at the heart of the Southend defence.
“I was desperate to play. It's someone else's misfortune and my good luck,” he said.
“I'd like to think I've come in and done well.
“We're competing all over the pitch. Against Fleetwood, would you see a League 2 side score the one they scored? Brighton – they had one real chance – and today, where they had one quality pass.”